Two daredevil YouTube stars went over the edge of a Canadian waterfall while trying to save one of their girlfriends — and all three died, according to reports.

Best buddies Ryker Gamble and Alexey Lyakh — who are part of the channel High on Life — were swimming at the top of Shannon Falls in British Columbia on Tuesday with Lyakh’s girlfriend, Megan Scraper, police told the BBC.

Scraper got caught in the strong current near the edge and plummeted over, dropping 98 feet below, witnesses said. As Lyakh was trying to keep her from going over the edge, he went over, too, the bystanders told John Willcox of Squamish Search and Rescue, according to The Montreal Gazette. Gamble also took the fatal plunge when he tried to help Lyakh.

A fourth friend who witnessed the accident then ran down the mountain to call for help.

“Even in his final act on this Earth, he was trying to save the life of his very best friend,” Gamble’s cousin, Rob Mangelsdorf, told the Gazette. “He’d known [Lyakh] his whole life, since they were little, little kids. They were inseparable, absolutely inseparable their whole lives.”

Gamble and Lyakh formed the YouTube channel High On Life — which boasts more than 500,000 subscribers — with high school friend Parker Heuser to chronicle their adventures around the world.

They have also attracted a massive fan base on social media — 1.1 million followers on Instagram and more than 126,000 likes on their Facebook page.

“We travel around the world for a living and make fun and adventurous videos!” the group wrote on their Facebook page. “We also have a clothing company.”

They are known for posting death-defying videos on their page — including one titled, “Epic Cliff Jumping and Waterfall Slide (EXTREME DANGER).”

Scraper, who goes by “Mindy” on Instagram, has about 173,000 followers on her account, “mindythelion.” She often appears on the “High on Life” account as well.

Last year, Gamble, Lyakh and another High on Life member, Justis Price Brown, pleaded guilty to walking on a sensitive hot spring in Yellowstone National Park and other crimes at parks in the western US, the Courier reported. As a result, the trio was banned from US federal land for five years.

In a new video posted Friday morning, seven members of the group faced the camera as one of them delivered an emotional tribute to their friends.

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Social media stars delivered an emotional tribute to their friends

Social media stars delivered an emotional tribute to their friends

“There are truly no words that can be said to ease the pain and the devastation that we are all going through right now,” he said in the video. “They were three of the warmest, kindest, most driven and outgoing people you could ever meet, and the world has lost a great deal of light from the passing of our friends. They lived every single day to its fullest, they stood for positivity, courage, living the best life you can, and they shared and taught their values to millions of people worldwide.”

“As tragic as their loss is,” he continued, “their message lives on through us all, and it is now our responsibility to keep the message going.”